Data from: Shorter juvenile telomere length is associated with higher survival to spawning in migratory Atlantic salmon
The risk of mortality associated with a long-distance migration will depend on an animal's physiological state, as well as the prevailing ecological conditions. Here we assess whether juvenile telomere length, which in endotherms has been shown to be a biomarker of physiological state and expec...
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Online Access: | https://doi.org/10.5061/dryad.rk030 |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::26337231a33ad5af54d37813145177f2 2023-05-15T15:32:12+02:00 Data from: Shorter juvenile telomere length is associated with higher survival to spawning in migratory Atlantic salmon McLennan, Darryl Armstrong, John D. Stewart, David C. Mckelvey, Simon Boner, Winnie Monaghan, Pat Metcalfe, Neil B. 2017-01-01 https://doi.org/10.5061/dryad.rk030 undefined unknown Dryad Digital Repository https://dx.doi.org/10.5061/dryad.rk030 http://dx.doi.org/10.5061/dryad.rk030 lic_creative-commons 10.5061/dryad.rk030 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:97869 oai:easy.dans.knaw.nl:easy-dataset:97869 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 sex effects smolt fish migration physiological state Salmo salar Life sciences medicine and health care envir geo Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2017 fttriple https://doi.org/10.5061/dryad.rk030 2023-01-22T17:23:04Z The risk of mortality associated with a long-distance migration will depend on an animal's physiological state, as well as the prevailing ecological conditions. Here we assess whether juvenile telomere length, which in endotherms has been shown to be a biomarker of physiological state and expected lifespan, predicts whether wild Atlantic salmon Salmo salar successfully complete their marine migration. Over 1800 juvenile fish were trapped, measured, PIT-tagged and a tissue biopsy taken when migrating as juveniles down-river towards the sea. Survivors of the marine phase of the life cycle were then re-trapped and re-sampled when returning to the river to spawn as sexually mature adults, 1.5-2.5 years later. Most individuals experienced a reduction in telomere length during the marine migratory phase of their life cycle. While the relative rate of telomere loss was greater in males than females, telomere loss was unrelated to growth at sea. Contrary to expectations, salmon that had the shortest telomeres at the time of the outward migration had the greatest probability of surviving through to the return migration. This effect, independent of body size, may indicate a trade-off between investment in readiness for marine life (which favours high glucocorticoid levels, known to increase telomere attrition in other vertebrate species) and investment in telomere maintenance. Survival was also significantly influenced by the seasonal timing of outward migration, with the fish migrating downstream earliest in the spring having the highest probability of return. This study reveals that telomere length is associated with survival, although in ways that contrast with patterns seen in endotherms. This illustrates that while telomeres may be universally important for chromosome protection, the potential for telomere dynamics to predict performance may vary across taxa. Smolt RTL, adult RTL and RTL changeData contained in this spreadsheet relates to the general linear models assessing variation in adult RTL and RTL change. This ... Dataset Atlantic salmon Salmo salar Unknown |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
unknown |
topic |
sex effects smolt fish migration physiological state Salmo salar Life sciences medicine and health care envir geo |
spellingShingle |
sex effects smolt fish migration physiological state Salmo salar Life sciences medicine and health care envir geo McLennan, Darryl Armstrong, John D. Stewart, David C. Mckelvey, Simon Boner, Winnie Monaghan, Pat Metcalfe, Neil B. Data from: Shorter juvenile telomere length is associated with higher survival to spawning in migratory Atlantic salmon |
topic_facet |
sex effects smolt fish migration physiological state Salmo salar Life sciences medicine and health care envir geo |
description |
The risk of mortality associated with a long-distance migration will depend on an animal's physiological state, as well as the prevailing ecological conditions. Here we assess whether juvenile telomere length, which in endotherms has been shown to be a biomarker of physiological state and expected lifespan, predicts whether wild Atlantic salmon Salmo salar successfully complete their marine migration. Over 1800 juvenile fish were trapped, measured, PIT-tagged and a tissue biopsy taken when migrating as juveniles down-river towards the sea. Survivors of the marine phase of the life cycle were then re-trapped and re-sampled when returning to the river to spawn as sexually mature adults, 1.5-2.5 years later. Most individuals experienced a reduction in telomere length during the marine migratory phase of their life cycle. While the relative rate of telomere loss was greater in males than females, telomere loss was unrelated to growth at sea. Contrary to expectations, salmon that had the shortest telomeres at the time of the outward migration had the greatest probability of surviving through to the return migration. This effect, independent of body size, may indicate a trade-off between investment in readiness for marine life (which favours high glucocorticoid levels, known to increase telomere attrition in other vertebrate species) and investment in telomere maintenance. Survival was also significantly influenced by the seasonal timing of outward migration, with the fish migrating downstream earliest in the spring having the highest probability of return. This study reveals that telomere length is associated with survival, although in ways that contrast with patterns seen in endotherms. This illustrates that while telomeres may be universally important for chromosome protection, the potential for telomere dynamics to predict performance may vary across taxa. Smolt RTL, adult RTL and RTL changeData contained in this spreadsheet relates to the general linear models assessing variation in adult RTL and RTL change. This ... |
format |
Dataset |
author |
McLennan, Darryl Armstrong, John D. Stewart, David C. Mckelvey, Simon Boner, Winnie Monaghan, Pat Metcalfe, Neil B. |
author_facet |
McLennan, Darryl Armstrong, John D. Stewart, David C. Mckelvey, Simon Boner, Winnie Monaghan, Pat Metcalfe, Neil B. |
author_sort |
McLennan, Darryl |
title |
Data from: Shorter juvenile telomere length is associated with higher survival to spawning in migratory Atlantic salmon |
title_short |
Data from: Shorter juvenile telomere length is associated with higher survival to spawning in migratory Atlantic salmon |
title_full |
Data from: Shorter juvenile telomere length is associated with higher survival to spawning in migratory Atlantic salmon |
title_fullStr |
Data from: Shorter juvenile telomere length is associated with higher survival to spawning in migratory Atlantic salmon |
title_full_unstemmed |
Data from: Shorter juvenile telomere length is associated with higher survival to spawning in migratory Atlantic salmon |
title_sort |
data from: shorter juvenile telomere length is associated with higher survival to spawning in migratory atlantic salmon |
publisher |
Dryad Digital Repository |
publishDate |
2017 |
url |
https://doi.org/10.5061/dryad.rk030 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
10.5061/dryad.rk030 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:97869 oai:easy.dans.knaw.nl:easy-dataset:97869 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 |
op_relation |
https://dx.doi.org/10.5061/dryad.rk030 http://dx.doi.org/10.5061/dryad.rk030 |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.rk030 |
_version_ |
1766362701986004992 |